Waste-heat boiler



Jan. 31, 1928.

D. S. JCOBUS WASTE HEAT BOILER l Filed June 21. 1920 2 Sheets-Sheet lOrigina INVENTOR ATTORNEY` @and U IHIHIIIII Jan. 31, 1928.

D. S. JACOBUS WASTE HEAT BOILER 2 Sheets-Sheet 2 Original Filed June 2l.www

R O Tl N E V W Patented Jan. 31, 1928.

UNITED STATES PATENT OFFICE.

DAVID S. JACOBUS, OF JERSEYv CITY, NEW JERSEY, ASSIGNOR TO THE BABCOCK &WILCOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WASTE-HEAT BOILER.

Original application led June 21, 1920, Serial No. 390,358. Divided andthis application filed November 7, 1922.

My invention particularly relates to a steam boiler which may be usedeither in waste heat work or 'l'or direet tiring, and in which a highrate ol heat transfer obtained.

My invention consists ot certain novel parts and combinations of partsparticuilarly pointed out in the elaims.

The following is a description of a waste heat boiler embodying myinvention in the torni at present ln'eterred by me, but it will beunderstood that various modifications and changes may be made thereinwithout departing from the spirit ot my invention and without exceedingthe scope of my claims.

My present application is a division ot' my prior application, SerialNo. 390.358, which was tiled in the United 4States Patcnt Ofliee on orbefore June 21, 1920.

My invention will best be understood by reference to the accompanyingdrawings id which, Figure 1 is a longitudinal sectional view through asteam boiler for waste heat work embodying my invention; Fig. Q is asectional elevation taken on the line QF?. o'i Fig. 1, with part of thefigure broken away to show the tubes 13C; Fig. 3 is a sectionalelevation similar to Fig. 2 taken between the bank ot tubes 13b and thebaffle 50 in Fig. 1 looking to the right, and Fig. 4 is a Sectionalelevation similar to Fig. 3 taken between the bank ot' tubes 13c and thebattle GO in Fig. 1 looking to the right.

Referring, now7 to the drawings, 1() is an upper steam and water drumand l1 and l2 two lower aligned water chambers illustrated as separatedmud drums which are connected to the steam and water drum by banks oftubes 19)", 13", 13d and 14, bent outwardly away from the center linepassing through the two drums near one end ot the tubes `(as here shown,the. lower ends of the tubes), so that the two banks of tubes on eitherside of the center line are, spaced apart in the manner shown in Fig. 2,the direction of tubes troni the bent portions being inclined to thecenter line. In the form here shown, the boiler tubes are separated intodefinite sections 13b, 13c and 13d by baffles or walls and 60 extendingtransversely ot the drums, the batlie or batiies 50 extending upwardlyfrom the foundation Wall 61, while the baille or battles are suspendedbeneath the steam and Serial No. 599,517.

water drum it), A wall 62 is disposed between the boiler tubes 13 andthe economizer tubes lia. Alternate battles or walls 50 and 6;? toi-mingwith the associated parts openings (i3 and (Si. respectively, at thetop, while the alternate battle or battles 60, which extend downwardlysubstantially to the bottom ot' the tubes, are provided at their lowerends with two openings 65 on either side ot the eenter line, theseopenings being approximately in alignment with the tlm-s 57. The gasesentering through the llues 5T, therefore, are directed against the bentportions ot the two banks ot tubes and then flow longitudinally of thetubes between the baille 50 and the end wall ot the lsetting, passingthrough the central opening (it-3 ol the battle 50. The gases then flowalong the tubes of the second bank, and through the two openings G5 otthe baille 60, and, in a similar manner, over the remaining tubes, untilthey pass to the outlet ou, .trom which the gases are drawn to the stackby a tan 6T. The gases thus pass trom the inlet lues to the bentendsolpthe tubes where they are widenechand thence longitudinally of thetubes to thesingle opening G3 in the batlie 50, and so bn through theboiler, thegases passing serially over the banks of tubes delimited bythe battles, and, in general, flowing longitudinally along the variousbanks ot' tubes. In the. arrangement shown in Fig. 1, the steam andwater drum is extended, as at 10` toward the rear and th(` dry pipe 17made to come in the part ot` the steam and water drum so extended, Byemploying this construction, the steam is taken trom above waterwhich isin a more quiescent state than .should it be taken at a nearer point tothe trout end ot' the drum, and the advantage ot' obtaining steam ot'the maximum dryness is thereby secured. l have indicated at l5soot-blowing elementsr for cleaning the boiler tubes.

I claim:

1. In a steam boiler, an upper steam and water drum, a lower mud drum,banks ot tubes connecting said steam and Water drum to saidfmud drum,each bank of tubes being bent near one end away from the center linethrough the two drums so that the two banks of tubes on either side ofthe center line are spaced apart, each bank being divided into aplurality of sections, and baffles l0- eated between adjacent sectionsof the tubes, alternate battles being Constructed and arranged to directtheI gases over the tubes at theill upper ends, and the other alternatebaffles being provided witll two openingsl opposite the lower ends ot'the tubes and on opposite sides ol the eenter lille whereby the gasesare directed in sel-iesl ol'er the seetiolls ot eaeh bank andlongitudinally of the tubes.

2. In a steanl boiler, all llpper steanl alld water drinn, a lower llluddrun'l, banks ot' tubes connecting said drnnls, each bank ot' tubesbeing bent near one end away froln the center lille through the twodrnnls so that the two banks ot tubes on either side ot' the renter lineare spared apart. battles disposed between the tubes andextendinetl'ansliersely of .said dl'ullls. alternate battles being provided withopenings at tlleil tree ends in the vieinty of the bent'. ends ot' thetubes 'forming thles on either side ot' the renter line, the otherbattlesv bein,"r tornled at their free ends to direct. the gases overthe upper ends of said tubes.

3. In a steam boiler, an upper steam and water drum, a lower mud drum,banks of tubes connecting said drums, each bank of tubes being bent nearone end away from the center line through the two drums so that the twobanks of tubes on either side of the Center line are spaced apart, andn'leans for directing@r the lgases ill paths longitudiu nally ot therespective banks ot tubes, said nleans eonlprising bullies disposedbetween the tubes and extending transversely at their lower endsl withtwo openingsl ill the vieillity of the bent ends ol said tubes alldforniingr passages lor the gares on either .side ot the eenter line.

4. In a `steanl boiler, all upper steanl and water drun'l, a lower llnlddruln, banks Vof tubes connecting said stealn and water drunl to saidlnud drunl. eaeil bank being` divided into a plurality ol' seetions, andbattles loeated between adjaeent sections of the tubes, alternatebattles beine' constructed :nld :lrranged to direet the gases over thetubes at their upper ends, and the other alternate battles beinerprovided with two openings opposite the lower ends of the tubes and onopposite sides of the center lille whereby the erases are directed illseriesl over the sections of each bank and longitudinally of the tubes.

DAVID S. JACOBUS.

